The PulseTech 390PT Digital Battery and System Analyzer tests 6V and 12V batteries and systems, as well as 24V systems. The system tests all lead acid battery types including VRLA batteries, both deep cycle and standard designs. The 390PT provides a graphical State of Health or State of Charge analysis for batteries, including "good and pass," good and recharge," "recharge and retest," "bad and replace" or "bad cell and replace" display read-outs.